/**
 * Copyright (c) 2014 - 2019, Nordic Semiconductor ASA
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, must reproduce the above copyright notice, this list of
 *    conditions and the following disclaimer in the documentation and/or other
 *    materials provided with the distribution.
 *
 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
 *
 * 5. Any software provided in binary form under this license must not be reverse
 *    engineered, decompiled, modified and/or disassembled.
 *
 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
/** @file
 *
 * @defgroup ble_sdk_uart_over_ble_main main.c
 * @{
 * @ingroup  ble_sdk_app_nus_eval
 * @brief    UART over BLE application main file.
 *
 * This file contains the source code for a sample application that uses the Nordic UART service.
 * This application uses the @ref srvlib_conn_params module.
 */

#include <stdint.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf.h"
#include "ble_hci.h"
#include "ble_advdata.h"
#include "ble_advertising.h"
#include "ble_conn_params.h"
#include "nrf_sdh.h"
#include "nrf_sdh_soc.h"
#include "nrf_sdh_ble.h"
#include "nrf_ble_gatt.h"
#include "nrf_ble_qwr.h"
#include "app_timer.h"
#include "nrf_drv_timer.h"
#include "ble_nus.h"
#include "app_uart.h"
#include "app_util_platform.h"
#include "bsp_btn_ble.h"
#include "nrf_pwr_mgmt.h"

#if defined(UART_PRESENT)
#include "nrf_uart.h"
#endif
#if defined(UARTE_PRESENT)
#include "nrf_uarte.h"
#endif

#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"

#include "MyLog.h"

#include "nrf_delay.h"
#include "inv_mpu.h"
#include "lis2dw12_reg.h"
#include "lis2dw12_port.h"

#define APP_BLE_CONN_CFG_TAG 1 /**< A tag identifying the SoftDevice BLE configuration. */

#define DEVICE_NAME "SSensing ADC"                       /**< Name of device. Will be included in the advertising data. */
#define NUS_SERVICE_UUID_TYPE BLE_UUID_TYPE_VENDOR_BEGIN /**< UUID type for the Nordic UART Service (vendor specific). */

#define APP_BLE_OBSERVER_PRIO 3 /**< Application's BLE observer priority. You shouldn't need to modify this value. */

#define APP_ADV_INTERVAL 800 /**< The advertising interval (in units of 0.625 ms. This value corresponds to 40 ms). */

#define APP_ADV_DURATION 18000 /**< The advertising duration (180 seconds) in units of 10 milliseconds. */

#define MIN_CONN_INTERVAL MSEC_TO_UNITS(500, UNIT_1_25_MS)   /**< Minimum acceptable connection interval (20 ms), Connection interval uses 1.25 ms units. */
#define MAX_CONN_INTERVAL MSEC_TO_UNITS(500, UNIT_1_25_MS)   /**< Maximum acceptable connection interval (75 ms), Connection interval uses 1.25 ms units. */
#define SLAVE_LATENCY 0                                      /**< Slave latency. */
#define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS)     /**< Connection supervisory timeout (4 seconds), Supervision Timeout uses 10 ms units. */
#define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(5000) /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (5 seconds). */
#define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(30000) /**< Time between each call to sd_ble_gap_conn_param_update after the first call (30 seconds). */
#define MAX_CONN_PARAMS_UPDATE_COUNT 3                       /**< Number of attempts before giving up the connection parameter negotiation. */

#define DEAD_BEEF 0xDEADBEEF /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */
#define UART_TX_BUF_SIZE 256 /**< UART TX buffer size. */
#define UART_RX_BUF_SIZE 256 /**< UART RX buffer size. */

#define TX_POWER_LEVEL (-20)
/* 数据缓冲区和发送控制 */

BLE_NUS_DEF(m_nus, NRF_SDH_BLE_TOTAL_LINK_COUNT); /**< BLE NUS service instance. */
NRF_BLE_GATT_DEF(m_gatt);                         /**< GATT module instance. */
NRF_BLE_QWR_DEF(m_qwr);                           /**< Context for the Queued Write module.*/
BLE_ADVERTISING_DEF(m_advertising);               /**< Advertising module instance. */

static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID;               /**< Handle of the current connection. */
static uint16_t m_ble_nus_max_data_len = BLE_GATT_ATT_MTU_DEFAULT - 3; /**< Maximum length of data (in bytes) that can be transmitted to the peer by the Nordic UART service module. */
static ble_uuid_t m_adv_uuids[] =                                      /**< Universally unique service identifier. */
    {
        {BLE_UUID_NUS_SERVICE, NUS_SERVICE_UUID_TYPE}};

/* Private macro -------------------------------------------------------------*/

// #define SAMPLE_TIME             5  //采样时间5s
// #define SAMPLE_FREQ             5  //采样频率20HZ(1.25/5/20/40四种可选)
// #define SAMPLE_SEND_GAP_TIME    1  //采样到发送(开始广播)的时间间隔 min

#define TASK_FREQ 1        // 采样任务时间周期，单位ms
APP_TIMER_DEF(task_timer); // 用于替代延时的单次定时器
APP_TIMER_DEF(init_timer); // 用于计时的循环定时
uint8_t time_flag = 1;     // 延时任务标志
uint8_t adc_flag = 0;      // 延时任务标志uint8_t time_flag = 1;					// 延时任务标志
uint8_t adc_count = 0;     // adc均值滤波计

float adc_sum = 0;
float adc_avg = 0;

/***********************************************************************************
 *                          关闭 FPU IRQ
 * *********************************************************************************/

#define FPU_EXCEPTION_MASK 0x0000009F //!< FPU exception mask used to clear exceptions in FPSCR register.
#define FPU_FPSCR_REG_STACK_OFF 0x40  //!< Offset of FPSCR register stacked during interrupt handling in FPU part stack

/**

 * @brief FPU Interrupt handler. Clearing exception flag at the stack.

 * Function clears exception flag in FPSCR register and at the stack. During interrupt handler

 * execution FPU registers might be copied to the stack (see lazy stacking option) and

 * it is necessary to clear data at the stack which will be recovered in the return from

 * interrupt handling.

 */

void uart_event_handle(app_uart_evt_t *p_event)
{
}

/**@brief  Function for initializing the UART module.
 */
/**@snippet [UART Initialization] */
static void uart_init(void)
{
    uint32_t err_code;
    app_uart_comm_params_t const comm_params =
        {
            .rx_pin_no = RX_PIN_NUMBER,
            .tx_pin_no = TX_PIN_NUMBER,
            .rts_pin_no = RTS_PIN_NUMBER,
            .cts_pin_no = CTS_PIN_NUMBER,
            .flow_control = APP_UART_FLOW_CONTROL_DISABLED,
            .use_parity = false,
#if defined(UART_PRESENT)
            .baud_rate = NRF_UART_BAUDRATE_115200
#else
            .baud_rate = NRF_UART_BAUDRATE_115200
#endif
        };

    APP_UART_FIFO_INIT(&comm_params,
                       UART_RX_BUF_SIZE,
                       UART_TX_BUF_SIZE,
                       uart_event_handle,
                       APP_IRQ_PRIORITY_LOWEST,
                       err_code);
    APP_ERROR_CHECK(err_code);
}

void FPU_IRQHandler(void)
{
    // Prepare pointer to stack address with pushed FPSCR register.
    uint32_t *fpscr = (uint32_t *)(FPU->FPCAR + FPU_FPSCR_REG_STACK_OFF);
    // Execute FPU instruction to activate lazy stacking.
    (void)__get_FPSCR();
    // Clear flags in stacked FPSCR register.
    *fpscr = *fpscr & ~(FPU_EXCEPTION_MASK);
}

static void tx_power_set()
{
    ret_code_t err_code = sd_ble_gap_tx_power_set(BLE_GAP_TX_POWER_ROLE_ADV, m_advertising.adv_handle, TX_POWER_LEVEL);
    APP_ERROR_CHECK(err_code);
}

void ble_send(uint8_t *string, uint16_t length)
{
    //	unsigned char flash_data[11]="hell,nihao\n";
    uint32_t err_code;
    err_code = ble_nus_data_send(&m_nus, string, &length, m_conn_handle);
    if (err_code != NRF_ERROR_INVALID_STATE)
    {
        APP_ERROR_CHECK(err_code);
    }
}

/**@brief Function for assert macro callback.
 *
 * @details This function will be called in case of an assert in the SoftDevice.
 *
 * @warning This handler is an example only and does not fit a final product. You need to analyse
 *          how your product is supposed to react in case of Assert.
 * @warning On assert from the SoftDevice, the system can only recover on reset.
 *
 * @param[in] line_num    Line number of the failing ASSERT call.
 * @param[in] p_file_name File name of the failing ASSERT call.
 */
void assert_nrf_callback(uint16_t line_num, const uint8_t *p_file_name)
{
    app_error_handler(DEAD_BEEF, line_num, p_file_name);
}

/**@brief Function for initializing the timer module.
 */
static void app_timers_init(void)
{
    ret_code_t err_code = app_timer_init();
    APP_ERROR_CHECK(err_code);
}

/**
 * 定时器中断
 */

/**@brief Function for the GAP initialization.
 *
 * @details This function will set up all the necessary GAP (Generic Access Profile) parameters of
 *          the device. It also sets the permissions and appearance.
 */
static void gap_params_init(void)
{
    uint32_t err_code;
    ble_gap_conn_params_t gap_conn_params;
    ble_gap_conn_sec_mode_t sec_mode;

    BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);

    err_code = sd_ble_gap_device_name_set(&sec_mode,
                                          (const uint8_t *)DEVICE_NAME,
                                          strlen(DEVICE_NAME));
    APP_ERROR_CHECK(err_code);

    memset(&gap_conn_params, 0, sizeof(gap_conn_params));

    gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL; // 连接后的连接事件可用的最小间隔时间(7.25ms - 4s)
    gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL; // 连接后的连接事件可用的最大间隔时间(7.25ms - 4s)
    gap_conn_params.slave_latency = SLAVE_LATENCY;         // 从机允许跳过主机发起连接的数目(降功耗，防断连)(可选值0~499)
    gap_conn_params.conn_sup_timeout = CONN_SUP_TIMEOUT;   // 连接后允许两个设备不通信的最长时间(> (LATENCY+1)*CONN_INTERVAL)(100ms-32s)

    err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
    APP_ERROR_CHECK(err_code);
}

/**@brief Function for handling Queued Write Module errors.
 *
 * @details A pointer to this function will be passed to each service which may need to inform the
 *          application about an error.
 *
 * @param[in]   nrf_error   Error code containing information about what went wrong.
 */
static void nrf_qwr_error_handler(uint32_t nrf_error)
{
    APP_ERROR_HANDLER(nrf_error);
}

/**@brief Function for handling the data from the Nordic UART Service.
 *
 * @details This function will process the data received from the Nordic UART BLE Service and send
 *          it to the UART module.
 *
 * @param[in] p_evt       Nordic UART Service event.
 */
/**@snippet [Handling the data received over BLE] */
static void nus_data_handler(ble_nus_evt_t *p_evt)
{
    //    uint16_t len_per_send = 240; //单次发送的字节长度
    //    uint8_t* p_send = (uint8_t*)accel_data;
    uint8_t task_flag = 0; // 延时任务标志
    if (p_evt->type)
    {
        if (time_flag)
            app_timer_start(init_timer, APP_TIMER_TICKS(20), &task_flag); // 单次计时20ms用于代替延时
        time_flag = 0;
    }
}
/**@snippet [Handling the data received over BLE] */

/**@brief Function for initializing services that will be used by the application.
 */
static void services_init(void)
{
    uint32_t err_code;
    ble_nus_init_t nus_init;
    nrf_ble_qwr_init_t qwr_init = {0};

    // Initialize Queued Write Module.
    qwr_init.error_handler = nrf_qwr_error_handler;

    err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init);
    APP_ERROR_CHECK(err_code);

    // Initialize NUS.
    memset(&nus_init, 0, sizeof(nus_init));

    nus_init.data_handler = nus_data_handler;

    err_code = ble_nus_init(&m_nus, &nus_init);
    APP_ERROR_CHECK(err_code);
}

/**@brief Function for handling an event from the Connection Parameters Module.
 *
 * @details This function will be called for all events in the Connection Parameters Module
 *          which are passed to the application.
 *
 * @note All this function does is to disconnect. This could have been done by simply setting
 *       the disconnect_on_fail config parameter, but instead we use the event handler
 *       mechanism to demonstrate its use.
 *
 * @param[in] p_evt  Event received from the Connection Parameters Module.
 */
static void on_conn_params_evt(ble_conn_params_evt_t *p_evt)
{
    uint32_t err_code;

    if (p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED)
    {
        err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
        APP_ERROR_CHECK(err_code);
    }
}

/**@brief Function for handling errors from the Connection Parameters module.
 *
 * @param[in] nrf_error  Error code containing information about what went wrong.
 */
static void conn_params_error_handler(uint32_t nrf_error)
{
    APP_ERROR_HANDLER(nrf_error);
}

/**@brief Function for initializing the Connection Parameters module.
 */
static void conn_params_init(void)
{
    uint32_t err_code;
    ble_conn_params_init_t cp_init;

    memset(&cp_init, 0, sizeof(cp_init));

    cp_init.p_conn_params = NULL;
    cp_init.first_conn_params_update_delay = FIRST_CONN_PARAMS_UPDATE_DELAY;
    cp_init.next_conn_params_update_delay = NEXT_CONN_PARAMS_UPDATE_DELAY;
    cp_init.max_conn_params_update_count = MAX_CONN_PARAMS_UPDATE_COUNT;
    cp_init.start_on_notify_cccd_handle = BLE_GATT_HANDLE_INVALID;
    cp_init.disconnect_on_fail = false;
    cp_init.evt_handler = on_conn_params_evt;
    cp_init.error_handler = conn_params_error_handler;

    err_code = ble_conn_params_init(&cp_init);
    APP_ERROR_CHECK(err_code);
}

/**@brief Function for putting the chip into sleep mode.
 *
 * @note This function will not return.
 */
static void sleep_mode_enter(void)
{
    uint32_t err_code = bsp_indication_set(BSP_INDICATE_IDLE);
    APP_ERROR_CHECK(err_code);

    // Prepare wakeup buttons.
    err_code = bsp_btn_ble_sleep_mode_prepare();
    APP_ERROR_CHECK(err_code);

    // Go to system-off mode (this function will not return; wakeup will cause a reset).
    err_code = sd_power_system_off();
    APP_ERROR_CHECK(err_code);
}

/**@brief Function for handling advertising events.
 *
 * @details This function will be called for advertising events which are passed to the application.
 *
 * @param[in] ble_adv_evt  Advertising event.
 */
static void on_adv_evt(ble_adv_evt_t ble_adv_evt)
{
    //    uint32_t err_code;

    switch (ble_adv_evt)
    {
    case BLE_ADV_EVT_FAST:
        // err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING); //开启指示灯
        // APP_ERROR_CHECK(err_code);
        break;
    case BLE_ADV_EVT_IDLE:
        sleep_mode_enter();
        break;
    default:
        break;
    }
}

/**@brief Function for handling BLE events.
 *
 * @param[in]   p_ble_evt   Bluetooth stack event.
 * @param[in]   p_context   Unused.
 */
static void ble_evt_handler(ble_evt_t const *p_ble_evt, void *p_context)
{
    uint32_t err_code;

    switch (p_ble_evt->header.evt_id)
    {
    case BLE_GAP_EVT_CONNECTED:
        NRF_LOG_INFO("Connected");
        err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
        APP_ERROR_CHECK(err_code);
        m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
        err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
        APP_ERROR_CHECK(err_code);
        break;

    case BLE_GAP_EVT_DISCONNECTED:
        NRF_LOG_INFO("Disconnected");
        // LED indication will be changed when advertising starts.
        m_conn_handle = BLE_CONN_HANDLE_INVALID;
        break;

    case BLE_GAP_EVT_PHY_UPDATE_REQUEST:
    {
        NRF_LOG_DEBUG("PHY update request.");
        ble_gap_phys_t const phys =
            {
                .rx_phys = BLE_GAP_PHY_AUTO,
                .tx_phys = BLE_GAP_PHY_AUTO,
            };
        err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
        APP_ERROR_CHECK(err_code);
    }
    break;

    case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
        // Pairing not supported
        err_code = sd_ble_gap_sec_params_reply(m_conn_handle, BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP, NULL, NULL);
        APP_ERROR_CHECK(err_code);
        break;

    case BLE_GATTS_EVT_SYS_ATTR_MISSING:
        // No system attributes have been stored.
        err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0, 0);
        APP_ERROR_CHECK(err_code);
        break;

    case BLE_GATTC_EVT_TIMEOUT:
        // Disconnect on GATT Client timeout event.
        err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gattc_evt.conn_handle,
                                         BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
        APP_ERROR_CHECK(err_code);
        break;

    case BLE_GATTS_EVT_TIMEOUT:
        // Disconnect on GATT Server timeout event.
        err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gatts_evt.conn_handle,
                                         BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
        APP_ERROR_CHECK(err_code);
        break;

    default:
        // No implementation needed.
        break;
    }
}

/**@brief Function for the SoftDevice initialization.
 *
 * @details This function initializes the SoftDevice and the BLE event interrupt.
 */
static void ble_stack_init(void)
{
    ret_code_t err_code;

    err_code = nrf_sdh_enable_request();
    APP_ERROR_CHECK(err_code);

    // Configure the BLE stack using the default settings.
    // Fetch the start address of the application RAM.
    uint32_t ram_start = 0;
    err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start);
    APP_ERROR_CHECK(err_code);

    // Enable BLE stack.
    err_code = nrf_sdh_ble_enable(&ram_start);
    APP_ERROR_CHECK(err_code);

    // Register a handler for BLE events.
    NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL);
}

/**@brief Function for handling events from the GATT library. */
void gatt_evt_handler(nrf_ble_gatt_t *p_gatt, nrf_ble_gatt_evt_t const *p_evt)
{
    if ((m_conn_handle == p_evt->conn_handle) && (p_evt->evt_id == NRF_BLE_GATT_EVT_ATT_MTU_UPDATED))
    {
        m_ble_nus_max_data_len = p_evt->params.att_mtu_effective - OPCODE_LENGTH - HANDLE_LENGTH;
        NRF_LOG_INFO("Data len is set to 0x%X(%d)", m_ble_nus_max_data_len, m_ble_nus_max_data_len);
    }
    NRF_LOG_DEBUG("ATT MTU exchange completed. central 0x%x peripheral 0x%x",
                  p_gatt->att_mtu_desired_central,
                  p_gatt->att_mtu_desired_periph);
}

/**@brief Function for initializing the GATT library. */
void gatt_init(void)
{
    ret_code_t err_code;

    err_code = nrf_ble_gatt_init(&m_gatt, gatt_evt_handler);
    APP_ERROR_CHECK(err_code);

    err_code = nrf_ble_gatt_att_mtu_periph_set(&m_gatt, NRF_SDH_BLE_GATT_MAX_MTU_SIZE);
    APP_ERROR_CHECK(err_code);
}

/**@brief Function for handling events from the BSP module.
 *
 * @param[in]   event   Event generated by button press.
 */
void bsp_event_handler(bsp_event_t event)
{
    uint32_t err_code;
    switch (event)
    {
    case BSP_EVENT_SLEEP:
        sleep_mode_enter();
        break;

    case BSP_EVENT_DISCONNECT:
        err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
        if (err_code != NRF_ERROR_INVALID_STATE)
        {
            APP_ERROR_CHECK(err_code);
        }
        break;

    case BSP_EVENT_WHITELIST_OFF:
        if (m_conn_handle == BLE_CONN_HANDLE_INVALID)
        {
            err_code = ble_advertising_restart_without_whitelist(&m_advertising);
            if (err_code != NRF_ERROR_INVALID_STATE)
            {
                APP_ERROR_CHECK(err_code);
            }
        }
        break;

    default:
        break;
    }
}

/**@brief Function for initializing the Advertising functionality.
 */
static void advertising_init(void)
{
    uint32_t err_code;
    ble_advertising_init_t init;
    int8_t tx_power_level = TX_POWER_LEVEL;
    memset(&init, 0, sizeof(init));

    init.advdata.name_type = BLE_ADVDATA_FULL_NAME;
    init.advdata.include_appearance = false;
    init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE;
    init.advdata.p_tx_power_level = &tx_power_level;

    init.srdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
    init.srdata.uuids_complete.p_uuids = m_adv_uuids;

    init.config.ble_adv_fast_enabled = true;
    init.config.ble_adv_fast_interval = APP_ADV_INTERVAL;
    init.config.ble_adv_fast_timeout = APP_ADV_DURATION;
    init.evt_handler = on_adv_evt;

    err_code = ble_advertising_init(&m_advertising, &init);
    APP_ERROR_CHECK(err_code);

    ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG);
}

/**@brief Function for initializing buttons and leds.
 *
 * @param[out] p_erase_bonds  Will be true if the clear bonding button was pressed to wake the application up.
 */
// static void buttons_leds_init(bool * p_erase_bonds)
// {
//     bsp_event_t startup_event;

//     uint32_t err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS, bsp_event_handler);
//     APP_ERROR_CHECK(err_code);

//     err_code = bsp_btn_ble_init(NULL, &startup_event);
//     APP_ERROR_CHECK(err_code);

//     *p_erase_bonds = (startup_event == BSP_EVENT_CLEAR_BONDING_DATA);
// }
static void LP_timers_init(void)
{
    ret_code_t err_code = app_timer_init();
    APP_ERROR_CHECK(err_code);
}

/**@brief Function for initializing the nrf log module.
 */
static void log_init(void)
{
    ret_code_t err_code = NRF_LOG_INIT(NULL);
    APP_ERROR_CHECK(err_code);

    NRF_LOG_DEFAULT_BACKENDS_INIT();
}

/**@brief Function for initializing power management.
 */
static void power_management_init(void)
{
    ret_code_t err_code;
    err_code = nrf_pwr_mgmt_init();
    APP_ERROR_CHECK(err_code);
}

/**@brief Function for handling the idle state (main loop).
 *
 * @details If there is no pending log operation, then sleep until next the next event occurs.
 */
static void idle_state_handle(void)
{
    if (NRF_LOG_PROCESS() == false)
    {
        nrf_pwr_mgmt_run();
    }
}

/**@brief Function for starting advertising.
 */
static void advertising_start(void)
{
    uint32_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
    APP_ERROR_CHECK(err_code);
}

static void task_timer_handler(void *p_context) {
//    nrf_gpio_pin_write(LIS2DW12_CTRL_IO, 1);
    uint16_t adc_raw = ADS7042_Readsingle();
    // 测试LOG版本输出：计算电压值（放大1000倍以便于分离整数和小数部分）
    // uint32_t temp = (uint32_t)adc_raw *3300UL / 4095; // 此时temp是实际电压的1000倍
    // uint16_t volt_int = temp / 1000;      // 提取整数部分（伏特）
    // uint16_t volt_dec = temp % 1000;     // 提取小数部分（毫伏）
    // MY_LOG_DEBUG("voltage: %u.%03u V\n", volt_int, volt_dec);
	
     // UART输出版本，直接输出
     float temp = adc_raw * 3.3 / 4095;
    printf("voltage: %.2f\n", temp);
    // 注意格式：%03u确保小数部分有三位
	
}

static void init_timer_handler(void *p_context)
{
    nrf_gpio_cfg_output(LIS2DW12_CTRL_IO);
    uint8_t flag = *(uint8_t *)p_context;
    switch (flag)
    {
    case 0: // 第一次延时任务(20ms延时，用于IIC之后稳定外设时序)
        //					MPU6050_I2C_Init();
        LIS2DW12_I2C_Init();
        nrf_gpio_pin_write(LIS2DW12_CTRL_IO, 1);
        //						MY_LOG_DEBUG("mpu turn on!");
        (*(uint8_t *)p_context)++;                                   // 更改标志位的值，方便下次进入执行其他延时任务
        app_timer_start(init_timer, APP_TIMER_TICKS(20), p_context); // 单次计时100ms用于代替延时
        break;
    case 1:
        app_timer_start(task_timer, APP_TIMER_TICKS(TASK_FREQ), p_context);
        break;
    default:
        break;
    }
}

/**@brief Application main function.
 * Gitee version 1.0
 */
int main(void)
{
    /*-------------------------- 关闭FPU ---------------------------*/
    __set_FPSCR(__get_FPSCR() & ~(FPU_EXCEPTION_MASK));
    (void)__get_FPSCR();
    NVIC_ClearPendingIRQ(FPU_IRQn);

    /*-------------------------- 外设初始化 ---------------------------*/
    // Initialize.
    uart_init();
    // log_init();
    // buttons_leds_init(&erase_bonds);
		spi_init();
    // HW_timers_init(); //硬件定时器初始化
    LP_timers_init();                                                           // app定时器初始化
    app_timer_create(&task_timer, APP_TIMER_MODE_REPEATED, task_timer_handler); // 初始化任务定时器（rep mode）
    // app_timer_create(&init_timer,APP_TIMER_MODE_SINGLE_SHOT,init_timer_handler); //初始化单次定时器（single mode）

    /*--------------------------蓝牙协议栈初始化 ---------------------------*/
    power_management_init();
    NRF_POWER->DCDCEN = 1; // 使用内部DCDC
    ble_stack_init();
    gap_params_init();
    gatt_init();
    services_init();
    advertising_init();
    conn_params_init();
    tx_power_set(); // 设置蓝牙射频发送功率

    /*-------------------------- 开启应用 ---------------------------*/
		// MY_LOG_DEBUG("Applaction2 start");
    app_timer_start(task_timer, APP_TIMER_TICKS(5), NULL);
    // nrf_gpio_cfg_output(LIS2DW12_CTRL_IO);
    // nrf_gpio_pin_write(LIS2DW12_CTRL_IO, 0);

    for (;;)
    {
        // adc_sample_task(); // 调用Process_Sine_Wave_Optimized
        // Process_Data_Output(); // 发送缓冲数据
        idle_state_handle();
    }
}
/**
 * @}
 */
